Backwiring

Claim 2

A machine for preparing pins projecting from a board to project therefrom in parallel for facilitating wiring, providing: first means for supporting the board for particularly positioning the pins; second means including at least one chuck element having a particular axis, further having means for positive engagement of the tip of a pin for rotation about the axis and having surface means for engaging a pin when misaligned with the axis for urging introduction of the pin tip into engagement with the engaging means; third means coupled to the first and second means for positioning the pin on the board and the chuck element so that the particular axis of the chuck element is colinear with an axis defining a desired axis of extension of the pin; fourth means coupled to one of the second and third means for moving the chuck element and the pin sequentially towards and away from each other respectively for the surface means to engage a pin when aligned to cause the engaging means to receive the pin tip, on one hand, and for retracting the pin from the engaging means, on the other hand; and fifth means coupled to the chuck for turning the chuck over a particular angle when its engaging means receive the pin tip, to twist the pin around the axis beyond the elastic limit as to torsional deformation.

Claim 3

A machine as set forth in claim 1, including sixth means for stepwise changing the position of the chuck element in relation to the board for sequential alignment with different pins; and means connected to the second through the fifth means for cyclically repeating Operation thereof for the different positions as established by the sixth means.

Claim 4

A machine as set forth in claim 2, the pins on the board being arranged in rows and columns, the second means including a plurality of chuck elements arranged in a row in correspondence to at least some of the pins of each row, the sixth means moving the board in direction of extension of the pin columns and in steps for a distance equal to the distance between each two rows; the fourth and fifth means being coupled to the chuck elements for respectively moving and turning them in unison.

Claim 5

A machine as set forth in claim 3, the fifth means including a rack, the chucks each being provided with a pinion meshing the rack, further including means for moving the rack to cause the chucks to turn.

Claim 6

A machine as set forth in claim 1, including means operatively coupled to the fifth means for relaxing the application of twisting force prior to retraction.

Claim 7

A machine as set forth in claim 10, the pins each having nonround cross section, the engaging means including an aperture to receive the pins, and having mating cross section, transverse to the axis.

Claim 8

A machine as set forth in claim 6, the surface means of the chuck element being a flared surface with an opening and merging into the engaging means for respectively receiving the pin tip upon operation of the fourth means and guiding the pin tip into engagement with the engaging means.

Claim 9

A machine as set forth in claim 7, the chuck element having a tip portion, having said flared opening and being bounded by a tapered outer tip surface, tending to gradually deflect a grossly misaligned pin, away from the axis upon operation of the fourth means.

Claim 10

A machine as set forth in claim 1, the fifth means being coupled to the chuck with adjustable slack.

Claim 11

A machine as set forth in claim 1, including means for indexing on the first and third means to establish a particular position relation between the chuck elements and the pins on the board as supported by the first means, the third means operating in dependence upon an established indexed relationship.

Claim 12

A machine for preparing pins projecting from a board and being arranged in rows and columns for facilitating backwiring, comprising: a table for placement and support of the board, including means for particularly positioning the board on the table as to particular orientation to the rows and columns; means coupled to the table for moving the table in the direction of extension of the columns and in steps equal to the distance between two adjacent rows; a bridge mounted across the table, the board moving underneath the bridge upon operation of the means for moving; a carriage disposed for vertical movement on the bridge and having at least one chuck element extending in down direction for each column, each chuck element having a flared entrance opening and a recess merging into the flared opening, the recess having cross section to positively engage a pin for rotation about an axis transverse to the row and column arrangement; means coupled to the carriage for vertically moving the carriage so that at least some of the chuck elements respectively engage tips of pins of the board, for directing the respective tips through operation of the flared entrances into the engaging recess; and means coupled to the chuck elements for providing individual turning motion around the respective axis of the chuck element, to thereby twist the respective pins.

Claim 13

A machine for preparing pins projecting from a board and being arranged in rows and columns for facilitating backwiring, comprising: a table for placement and support of the board, including means for particularly positioning the board on the table as to particular orientation to the rows and columns; means coupled to the table for moving the table in the direction of extension of the columns and in steps equal to the distance between two adjacent rows; a bridge mounted across the table, the board moving underneath the bridge upon operation of the means for moving; a carriage disposed for vertical movement on the bridge and having at least one chuck element extending in down direction for each column, each chuck element having a flared entrance opening and a recess merging into the flared opening, the recess having cross section to positively engage a pin for rotation about an axis transverse to the row and column arrangement; means coupled to the carriage for vertically moving the carriage so that at least some of the chuck elements respectively engage tips of pins of the board, for directing the respective tips through operation of the flared entrances into the engaging recess; and means coupled to the chuck elements for providing individual turning motion around the respective axis of the chuck element, to thereby twist the respective pins.

Claim 14

A machine as set forth in claim 11, chuck elements being arranged in two staggered rows, each chuck element for sequentially engaging of the pins of one column, the chuck elements of the same row concurrently engaging the pins of every other column.

Claim 15

In a machine for aligning pins firmly bonded to a matrix so as to prepare them for automatic wire wrapping, the combination comprising: head means for axially engaging the pins in a desired alignment position so as to alloW limited relative rotational motion between said head means and said pins; head rotation means for rotating said head means through a sufficient angular displacement so as to cause said pins to rotate with said head past their elastic torsional limit; movement means for causing relative motion between said head means and predetermined pins on said matrix so as to align said pins and said head means for engagement; and control means for causing said movement means, said head rotation means and said head means to cooperatively engage and rotate predetermined pins on said matrix past their elastic torsional limits.

Claim 16

In a machine for aligning pins firmly bonded to a matrix so as to prepare them for automatic wire wrapping, the combination comprising: head means for axially engaging the pins in a desired alignment position so as to alloW limited relative rotational motion between said head means and said pins; head rotation means for rotating said head means through a sufficient angular displacement so as to cause said pins to rotate with said head past their elastic torsional limit; movement means for causing relative motion between said head means and predetermined pins on said matrix so as to align said pins and said head means for engagement; and control means for causing said movement means, said head rotation means and said head means to cooperatively engage and rotate predetermined pins on said matrix past their elastic torsional limits.

Claim 17

The invention described in claim 13, including means for causing every pin on said matrix to be engaged and rotated past its elastic torsional limits.

Claim 18

The invention as claimed in claim 13, wherein said head means has a flared surface adapted to engage a pin, said surface being established by a plurality of different radii in relation to the axis of said pin.

Claim 19

The invention as described in claim 13, wherein said movement means is adapted to move in a plane perpendicular to the rotational axis of said head means and said pin matrix is removably attached to said movement means so that said pin axes are in parallel relationship to the rotational axis of said head means.

Claim 20

The invention described in claim 13, wherein said head means include a plurality of rotatable heads each having an entrance means for engaging said pins, said entrance means adapted to deflect misaligned pins of a first deflection into alignment with the axis of the engaging head and adapted to elastically increase the deflection of pins of a second deflection.

Claim 21

The invention described in claim 13, wherein said rotation means is adapted for variable control of the amount of rotation of said head rotation means and of the amount of relative rotational motion between said pins and said head means.

Claim 22

The invention described in claim 13, wherein said head rotation means is adapted to cause said head means to twist said pins through a sufficient angular displacement to cause a permanent angular displacement between points on the bottom and top surfaces of said pin which are in indexed relationship prior to said rotation.

Claim 23

The invention described in claim 13, wherein said head means is adapted to engage said pins to an amount necessary to distribute the permanent torsional displacement along the portion of the pin between the portion affixed to the matrix and the portion engaged by said head means.